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Finding the Fourth Proportional to 81,097.77, 111,908.46 and 45,285.66

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Solution

The fourth proportional to 81,097.77, 111,908.46 and 45,285.66 is: 62,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,097.77 : 111,908.46 = 45,285.66 : x
  2. Step 2: Convert to fraction form
    81,097.77/111,908.46 = 45,285.66/x
  3. Step 3: Cross multiply
    81,097.77x = 111,908.46 × 45,285.66
  4. Step 4: Simplify right side
    81,097.77x = 5,067,848,470.68
  5. Step 5: Solve for x
    x = 5,067,848,470.68/81,097.77
  6. Step 6: Final answer
    x = 62,490.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.